1 /* $NetBSD: acphy.c,v 1.16 2006/03/29 07:05:24 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 * 39 * $FreeBSD: src/sys/dev/mii/acphy.c,v 1.2.2.2 2002/10/21 21:20:19 semenu Exp $ 40 */ 41 42 /* 43 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Manuel Bouyer. 56 * 4. The name of the author may not be used to endorse or promote products 57 * derived from this software without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 69 */ 70 71 /* 72 * Driver for Altima AC101 10/100 PHY 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/socket.h> 79 #include <sys/errno.h> 80 #include <sys/module.h> 81 #include <sys/bus.h> 82 83 #include <net/if.h> 84 #include <net/if_var.h> 85 #include <net/if_media.h> 86 87 #include "mii.h" 88 #include "miivar.h" 89 #include "miidevs.h" 90 91 #include "acphyreg.h" 92 93 #include "miibus_if.h" 94 95 static int acphy_probe (device_t); 96 static int acphy_attach (device_t); 97 98 static device_method_t acphy_methods[] = { 99 /* device interface */ 100 DEVMETHOD(device_probe, acphy_probe), 101 DEVMETHOD(device_attach, acphy_attach), 102 DEVMETHOD(device_detach, ukphy_detach), 103 DEVMETHOD(device_shutdown, bus_generic_shutdown), 104 DEVMETHOD_END 105 }; 106 107 static const struct mii_phydesc acphys[] = { 108 MII_PHYDESC(xxALTIMA, AC101), 109 MII_PHYDESC(xxALTIMA, AC101L), 110 MII_PHYDESC(xxALTIMA, AC_UNKNOWN), 111 MII_PHYDESC(xxALTIMA, Am79C875), 112 MII_PHYDESC_NULL 113 }; 114 115 static devclass_t acphy_devclass; 116 117 static driver_t acphy_driver = { 118 "acphy", 119 acphy_methods, 120 sizeof(struct mii_softc) 121 }; 122 123 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, NULL, NULL); 124 125 static int acphy_service(struct mii_softc *, struct mii_data *, int); 126 static void acphy_reset(struct mii_softc *); 127 static void acphy_status(struct mii_softc *); 128 129 static int 130 acphy_probe(device_t dev) 131 { 132 struct mii_attach_args *ma = device_get_ivars(dev); 133 const struct mii_phydesc *mpd; 134 135 mpd = mii_phy_match(ma, acphys); 136 if (mpd != NULL) { 137 device_set_desc(dev, mpd->mpd_name); 138 return (0); 139 } 140 return (ENXIO); 141 } 142 143 static int 144 acphy_attach(device_t dev) 145 { 146 struct mii_softc *sc; 147 struct mii_attach_args *ma; 148 struct mii_data *mii; 149 150 sc = device_get_softc(dev); 151 ma = device_get_ivars(dev); 152 mii_softc_init(sc, ma); 153 sc->mii_dev = device_get_parent(dev); 154 mii = device_get_softc(sc->mii_dev); 155 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 156 157 sc->mii_inst = mii->mii_instance; 158 sc->mii_service = acphy_service; 159 sc->mii_reset = acphy_reset; 160 sc->mii_pdata = mii; 161 sc->mii_flags |= MIIF_NOISOLATE; 162 163 acphy_reset(sc); 164 165 mii->mii_instance++; 166 167 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 168 device_printf(dev, " "); 169 if (sc->mii_capabilities & BMSR_MEDIAMASK) 170 mii_phy_add_media(sc); 171 else 172 kprintf("no media present"); 173 kprintf("\n"); 174 175 MIIBUS_MEDIAINIT(sc->mii_dev); 176 return (0); 177 } 178 179 static int 180 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 181 { 182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 183 int reg; 184 185 /* 186 * If we're not selected, then do nothing, just isolate and power 187 * down, if changing media. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 190 if (cmd == MII_MEDIACHG) { 191 reg = PHY_READ(sc, MII_BMCR); 192 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN); 193 } 194 195 return (0); 196 } 197 198 switch (cmd) { 199 case MII_POLLSTAT: 200 break; 201 202 case MII_MEDIACHG: 203 /* 204 * If the interface is not up, don't do anything. 205 */ 206 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 207 break; 208 209 mii_phy_set_media(sc); 210 break; 211 212 case MII_TICK: 213 /* 214 * Is the interface even up? 215 */ 216 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 217 return (0); 218 219 /* 220 * Only used for autonegotiation. 221 */ 222 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 223 break; 224 225 /* 226 * This PHY's autonegotiation doesn't need to be kicked. 227 */ 228 break; 229 } 230 231 /* Update the media status. */ 232 acphy_status(sc); 233 234 /* Callback if something changed. */ 235 mii_phy_update(sc, cmd); 236 return (0); 237 } 238 239 static void 240 acphy_status(struct mii_softc *sc) 241 { 242 struct mii_data *mii = sc->mii_pdata; 243 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 244 int bmsr, bmcr; 245 246 mii->mii_media_status = IFM_AVALID; 247 mii->mii_media_active = IFM_ETHER; 248 249 bmsr = PHY_READ(sc, MII_BMSR) | 250 PHY_READ(sc, MII_BMSR); 251 if (bmsr & BMSR_LINK) 252 mii->mii_media_status |= IFM_ACTIVE; 253 254 bmcr = PHY_READ(sc, MII_BMCR); 255 if (bmcr & BMCR_ISO) { 256 mii->mii_media_active |= IFM_NONE; 257 mii->mii_media_status = 0; 258 return; 259 } 260 261 if (bmcr & BMCR_LOOP) 262 mii->mii_media_active |= IFM_LOOP; 263 264 if (bmcr & BMCR_AUTOEN) { 265 int diag; 266 267 if ((bmsr & BMSR_ACOMP) == 0) { 268 /* Erg, still trying, I guess... */ 269 mii->mii_media_active |= IFM_NONE; 270 return; 271 } 272 273 diag = PHY_READ(sc, MII_ACPHY_DIAG); 274 if (diag & AC_DIAG_SPEED) 275 mii->mii_media_active |= IFM_100_TX; 276 else 277 mii->mii_media_active |= IFM_10_T; 278 279 if (diag & AC_DIAG_DUPLEX) 280 mii->mii_media_active |= IFM_FDX; 281 } else { 282 mii->mii_media_active = ife->ifm_media; 283 } 284 } 285 286 static void 287 acphy_reset(struct mii_softc *sc) 288 { 289 mii_phy_reset(sc); 290 PHY_WRITE(sc, MII_ACPHY_INT, 0); 291 } 292